Reversible rotary sngw-plow



PATENTED JAN. 12, 1904.

0. CUTTING.

REVERSIBLE ROTARY SNOW PLOW,

APPLICATION FILED AUG. 4, 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

A TTOHNE r WITNESSES UERs co; mmo-uwa. WASNXNGYON n c No. 749,172. PATENTED JAN. 12, 1904.

- O. CUTTING.

REVERSIBLE ROTARY SNOW PLOW.

APPLICATION FILED AUG. 4, 1903.

N0 MODEL. 2 SHEETSSKEET 2.

WITNESSES: I N E.

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UNITED STATES Patented January 12, 1904.

PATENT OFFICE.

MAXIMILIAN J. ODONNELL,

OF SEATTLE, WASHINGTON REVERSIBLE ROTARY SNOW-PLOW.

SPECIFICATION forming part of Letters Patent No. 749,172, dated January 12, 1904.

Application filed August 4, 1903.

i .To whom, it rtay concern:

way-tracks, and more particularly from streetcar tracks.

To this end the invention consists in the novel construction and adaptation of parts, as will be hereinafter described, and finally pointed out in the claims.

In the accompanying drawings, wherein similar numerals designate corresponding parts in both the views, Figure 1 is a longitudinal vertical section through a snow-plow embodying myinvention, the driving mechanism of the rotary screw being shown somewhat diagrammatic; and Fig. 2 is a front elevation of the same, partly broken away.

The plow maybe as regards the truck and its propelling means, which is not shown,

of any usual or suitable construction.

Mounted upon the truck-bed so as to be horizontally rotatable is the car-body 2, provided with an extension 3, which projects beyond either end of the truck according to the direction in which it is to travel. Adjacent to the outer extremity of the said body extension is positioned a stationary or non-rotatable shaft 4, which is supported to the body by suitable brackets, such as 5. A cylindrical casing 6, which is open at the end 7, is disposed with its axistransversely of the car track when the body is in its operative position and is positioned to the -'rear ofand be-;

I neath planes projecting through the axis of the shaft 4, to which it is hinged by webs or arms 8. A shaft 9 is journaled in bracketboxes 10 axially of the saidcasing and extends through the closed end-7 thereof. A spiral of the said aperture.

Serial No. 168,155. (No model.)

plate or web 11 of one or more convolutions is integrally connected directly to the said shaft or to a hub 12, as shown, which is keyed or otherwise fixedly secured thereon. A sprocket-wheel 13 is fixedly mounted upon shaft 9 and is connected by chain 14 to a similar wheel 15, loosely mounted upon the said stationary shaft, but integrally connected by -a sleeve 16 with a pulley 17. Driving conners 22 and interpose a spring 23 between" the motor-frame and a chock 24, secured to the car-body, and by mounting the fulcrum ends of the casing suspension-webs Supon eccentrically-bored bushings 25, which are fixedly seated upon the shaft 4. The function of this eccentric mounting is to provide means to alter the distance between the axis of oscillation and the axis of the screw-shaft, while the distance between axes of the driving and driven sprocket-wheels remains constant. The eccentric bushings are adjusted to take up the slack of the chain by partially rotating shaft 4 and'securing the same by clamping the brackets 5 thereon. A'portion of the peripheral wall of the casing 6 in advance of the said spiral is removed to provide an opening 27 for the intake of the snow being handled and which is guided thereto by means of flaring scoop-flanges 28 and 29, projecting forwardly from the margins The bottom flange 28, which is intended normally to rest upon the upper surface of thetrack-rails 30, so as to clear the same of snow, upon coming in contact by any stationary object capable of damaging the said casing--as, for instance, the

'end of a guard-railthe casing and the rotary screw therein is moved backwardly, and-thereby raised, so as to pass freely over the obscribed.

31 is a spring which surrounds a stud 32, fulcrumed to lugs 33 of the casing and passing through an aperture of a yoke 34 by trunnions in a chair 35, secured to the framework of the car-body. This spring is intended to press the casing down to its operative position immediately it has passed over any obstacles upon the track, and the tension of the spring is adjusted by ahand-wheel 36, having screw-threads within its hub which register with corresponding threads upon the said stud. A line 37, passing over a fair leader or pulley 38, connects the casing with a drum 39 within the pilot-house and operated to raise the casing by suitable mechanism, such as gear and worm wheels 40 and 41, respectively actuated by a hand-wheel 42 when, for example, the body is to be swung around or reversed.

As before mentioned, the car-body is arranged to be rotated upon the truck and which can be advantageously attained by the devices shown in Fig. lthat is, segmental and circular tracks 43 and 44, which are carried upon casters or rollers 43 and 44, respectively journaled in suitable bearings 43 and 44 upon the truck-bed. The rotary motion of the carbody is accomplished within the limit of their action by means of gear-pinion 45 and rack 46, the latter being secured to the truck, while the spindle 47 of the pinion is journaled in suitable bearings 48, secured to the car-body, and is actuated by chain 49, passed around wheels 50 and 51 of the said spindle, and of a hand-actuated spindle 52, extending upwardly into the said pilot-house. After the said pinion, however, has traveled beyond the end and out of mesh with the engaged rack the carbody can be easily and quickly shoved around by the crew until the pinion is in mesh with the rack at the other end of the truck. A king-pin 53 is included in the mounting of the car-body and is made hollow for the passage of the electric supply or controlling wires (not shown in the drawings) and a brake-staff 54, which is connected in any suitable manner with brake-shoe devices (not shown) of the truck.

The advance end of the flange 28 is protected by a wearing-shoe 28, which can be replaced with a new one from time to time, and the sides and top of the forward extension of the car-body are protected by wearing metal plates 55, that are advantageously extended down about the forward end to provide a hood 56 to guard the said stationary shaft, and for a like reason the driven sprocket-wheel l3 and its driving-chain is inclosed within a casing 57.

The operation of the invention will be understood from the foregoing description; but it may be stated that the rotating screw which removes the snow from its path through the open end of the casing is capable of being moved from side to side with the front end of the car-body, and consequently is capable of cleaning a track at curves. Furthermore, the car-body and the various attachments thereof may be turned so that the rotary screw will be at either end and permits the car being run in either direction without turning the truck around, results unattainable by any other rotary plow which has come to my notice.

Having described the invention, what I claim as new, and desire to secure by Letters Patent, is g 1. In a rotary snow-plow, the combination with a car truck, of a car-body rotatably mounted upon and having an end extending beyond one end of the said truck, a screw device mounted upon a shaft transversely of and beneath the projecting portion of said body, means to raise said screw device clear of obstruction, and means to drive said screw.

2. In a rotary snow-plow, the combination with a truck and a car-body rotatably mounted thereon, of a cylindrical casing provided with an open end and an aperture in the peripheral wall thereof, flaring flanges projecting forwardly of said casing about the margin of said aperture, swinging connection between the car-body and the said casing whereby the latter is capable of being raised clear of obstructions, means to raise said cylinder from within a cab which is upon the car-body, means comprising a spring for pressing the casing down in operative position, a screw mounted upon and rotatable with a shaft extending axially through said casing, and means to rotate said shaft.

3. In a rotary snow-plow, in combination, a truck, a car-body pivotally mounted upon the said truck, a transversely-arranged screw device rotatably secured to the car-body adjacent of one of its ends, means to drive said screw device, and means for controlling the position of the car-body relatively to the truck whereby the said screw device may be moved from side to side.

4. In a rotary snow-plow the combination with the car-body, and a truck, of a hollow king-pin connecting said body and truck, a brake-staff passing through said hollow kingpin, a snow transmission-screw so suspended in swinging bearings from said body, that when'the casing is struck by an obstruction upon the track it will be raised clear of the same, a motive device in said body,-and mechanical connections from the said screw to the said motive device.

5. In a rotary snow-plow, the combination with a truck, and a car-body, of a screw device suspended in swinging bearings from the said body, a motive device on said body, and connections between said motive device and the said screw.

6. In a rotary snow-plow, the combination with a truck and a car-body, of a motive device on said car-body, a screw device secured to said car-body, means to raise and lower said screw device relatively of the car-body, mechanical connection between the said motive device and the said screw device, and the tension means for taking up the slack of said connection.

7. In a rotary-snow-plow, the combination with a truck, and a car-body, provided with an end projection beyond the front end of the truck, of a transversely-arranged non-rotative shaft supported from the car-body, a cylindrical casing hung from said shaft and provided with an open end and an aperture in the forward side of the peripheral wall thereof, a

shaft central of the said cylindrical casing, a v

screw device and a sprocket-wheel fixedly mounted upon said last-named shaft, a sprocket-wheel and a pulley integral of a sleeve loosely mounted upon the first-named shaft, chain connection between the said sprocket-wheels, and a rope connection between the said pulley and another pulley upon the shaft of a motive device upon the said car-body.

In testimony whereof I afliX my signature in presence of two witnesses.

OTIS CUTTING.

Witnesses:

PIERRE BARNES, HENRY S. NOON. 

